You can certainly run arbitrary stuff on a Linode; I'm currently running a custom-built read-only Arch image. You do have to put it there yourself, but if Ranc

You can certainly run arbitrary stuff on a Linode; I'm currently running a custom-built read-only Arch image. You do have to put it there yourself, but if RancherOS is billing itself as small and easy to update, that seems like it shouldn't be hard.